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Abstract

Tagging of photon trajectories in scattering media is possible by application
of a localized ultrasonic field to the sample and by measurement of the induced
speckle modulation. Instead of using a single optical detector, which integrates
the signal of many speckle grains, we propose a more efficient detection scheme
that uses a CCD camera and parallel lock-in detection to record the full modulation
of the speckle. The advantage of this multiplex detection is demonstrated,
as well as the imaging capabilities of the process for biological tissues.

References

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